Re: How to get key information from qt terminal to gnuplot

[sfeam <sf...@us...>]

On Monday, 23 June 2014 04:59:06 AM Tatsuro MATSUOKA wrote:
> ----- Original Message -----
> 
> > From: Tatsuro MATSUOKA 
> > To: Merritt Ethan ; gnuplot-beta
> > Cc: 
> > Date: 2014/6/23, Mon 04:13
> > Subject: Re: How to get key information from qt terminal to gnuplot
> > ----- Original Message -----
> >>  From: sfeam 
> >>  To: gnuplot-beta Tatsuro MATSUOKA 
> >>  Cc: 
> >>  Date: 2014/6/23, Mon 01:37
> >>  Subject: Re: How to get key information from qt terminal to gnuplot
> >> 
> >>  On Sunday, 22 June 2014 05:36:20 PM Tatsuro MATSUOKA wrote:
> >>>   Hello
> >>> 
> >>> 
> >> 
> > http://gnuplot.10905.n7.nabble.com/Spacebar-does-not-raise-command-window-with-wxt-terminal-td18540.html
> >>> 
> >>> 
> >>>   For qt terminal, this feature seems not to be implemented. (Right?)
> >>>   Although I do not have enough knowledge, I tried to implement it.
> >>>   I looked into qt_term.cpp and QtGnuplotScene.cpp.
> >>> 
> >>>   In QtGnuplotScene.cpp, qt terminal seems to return key information in 
> >>> 
> >>>   void QtGnuplotScene::keyPressEvent(QKeyEvent* event)
> >>>   <snip>
> >>>   live = m_eventHandler->postTermEvent(GE_keypress,
> >>>   int(m_lastMousePos.x()), int(m_lastMousePos.y()), key, 0, m_widget);
> >>> 
> >>>   While in qt_term.cpp,
> >>> 
> >>>   /*-------------------------------------------------------
> >>>    * Communication terminal -> gnuplot
> >>>    *-------------------------------------------------------*/
> >>> 
> >>>   bool qt_processTermEvent(gp_event_t* event)
> >>>   <snip>
> >>>   if ((event->type == GE_keypress) && (paused_for_mouse & 
> > 
> >>  PAUSE_KEYSTROKE) && (event->par1 > '\0'))
> >>> 
> >>> 
> >>>   However,
> >>>   'struct gp_event_t' has no member named 'key'
> >>> 
> >>> 
> >>>   How I do get key information from qt terminal to gnuplot?
> >> 
> >>  The simplest way is
> >>  gnuplot>  bind "<key>" "command to execute"
> >> 
> >>  No code change to the qt terminal is needed. However there is not
> >>  currently a "command to execute" that raises the console window.
> >>  The "raise" command acts on the plot window, not the console 
> > window.
> >> 
> >>  Why does the "raise console" function use different code for each
> >>  terminal type?  The console is the same no matter what terminal is
> >>  in use.  Am I missing something?  
> >> 
> >>  My current thinking is that the special code to raise the console
> >>  should be removed from all terminals.
> >>  Instead we could add a routine in mouse.c that responds to the
> >>  keystroke after it is passed to the gnuplot core.  This would be
> >>  shared by all terminals.  
> >> 
> >>      Ethan
> > OK. I agree with you.
> > Thanks for the pointer.
> 
> 
> Although I agree with Ethan, it is important to know the code to get information what key pressed 
> from gnuplot_qt to gnuplot. I will appreciate that some will show the way.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
QtGnuplotScene.cpp (line 965)
        live = m_eventHandler->postTermEvent(GE_keypress,
                int(m_lastMousePos.x()), int(m_lastMousePos.y()), key, 0, m_widget);

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
QtGnuplotEvent.cpp:
bool QtGnuplotEventHandler::postTermEvent(int type, int mx, int my, int par1, int par2, QtGnuplotWidget* widget)
{
        if ((m_socket == 0) || (m_socket->state() != QLocalSocket::ConnectedState) || (widget && !widget->isActive()))
                return false;

        gp_event_t event;
        event.type = type;
        event.mx = mx;
        event.my = my;
        event.par1 = par1;
        event.par2 = par2;
        event.winid = 0; // We don't forward any window id to gnuplot
        m_socket->write((char*) &event, sizeof(gp_event_t));

        return true;
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
qt_term.cpp:
/*-------------------------------------------------------
 * Communication terminal -> gnuplot
 *-------------------------------------------------------*/

bool qt_processTermEvent(gp_event_t* event)
{
 [...]
 do_event(event);

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
mouse.c:  do_event(struct gp_event_t *ge)

    case GE_keypress:
        event_keypress(ge, TRUE);
        break;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
mouse.c: event_keypress()



           Ethan